docs: def reset(stick):
      """
      Send a bunch of zero-bytes to the YubiHSM, and flush the input buffer.
      """
      nulls = (pyhsm.defines.YSM_MAX_PKT_SIZE - 1) * '\x00'
      res = YHSM_Cmd(stick, pyhsm.defines.YSM_NULL, payload = nulls).execute(read_response = False)
      unlock = stick.acquire()
      try:
          stick.drain()
          stick.flush()
      finally:
          unlock()
      return res == 0